Replacing The Cover Presence Switch - Lenovo ThinkCentre M83 Hardware Maintenance Manual

8. Insert the connector and cable of the new thermal sensor into the lower hole
align the two tabs on the plastic holder holding the thermal sensor with the two holes
chassis, and push the plastic holder until it snaps into position.
Figure 82. Installing the new thermal sensor
9. Reconnect the thermal sensor cable to the system board. See "Locating parts on the system board"
on page 72.
10. Reinstall the front bezel. See "Removing and reinstalling the front bezel" on page 94.
What to do next:
• To work with another piece of hardware, go to the appropriate section.
• To complete the installation or replacement, go to "Completing the parts replacement" on page 156.

Replacing the cover presence switch

Attention: Do not open your computer or attempt any repair before reading and understanding the Chapter
1 "Safety information" on page 1.
This section provides instructions on how to replace the cover presence switch (intrusion switch).
To replace the cover presence switch, do the following:
1. Remove all media from the drives and turn off all attached devices and the computer. Then, disconnect
all power cords from electrical outlets and disconnect all cables that are connected to the computer.
2. Remove the computer cover. See "Removing the computer cover" on page 93.
3. Locate the cover presence switch. See "Locating major FRUs and CRUs" on page 70.
4. Disconnect the cover presence switch cable from the cover presence switch connector on the system
board. See "Locating parts on the system board" on page 72.
142
ThinkCentre M83 and M93/p Hardware Maintenance Manual
1 in the chassis. Then
1 and 2 in the